Pr80Al20 surface-coated DyF3 modified sintered Nd-Fe-B magnets for large coercivity increment via grain boundary diffusion

•A novel composite Pr80Al20 particle surface-coated with DyF3 was designed as diffusion source.•Huge coercivity increments of 11.63 kOe and 10.52 kOe reported in this paper exceed the maximum values in literature for GBD with Dy-containing sources in sintered Nd-Fe-B magnets.•The optimized Pr-Al-ric...

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Veröffentlicht in:	Journal of alloys and compounds 2022-04, Vol.899, p.163270, Article 163270
Hauptverfasser:	Li, Feifei, Li, Jiajie, Ur Rehman, Sajjad, Zhang, Lili, Hu, Yikuan, Yang, Munan, Yu, Xiaoqiang, Zhong, Shuwei, Liang, Tongxiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Coercivity Core-shell structure Diffusion coating Grain boundaries Grain boundary diffusion Magnetic anisotropy Magnets Microstructure Neodymium Praseodymium Sintered Nd-Fe-B magnet Sintering (powder metallurgy) Surface coating
Online-Zugang:	Volltext
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